Rotation is transmitted from gear 2 to roll 3 by slider 6 and slotted link 5. Slider 6 turns on pin 7 mounted in gear 2. Slotted link 5 is rigidly secured to roll 3. The mechanism enables the distance to be varied between the axis of roll 3, and the axis of roll 4 and gear 1.
$1468$LG,FD$